Temperature regulating and indicating device.



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APPLICATION FILED MAR. 14. 1916. l l 17,601 i Patented lFeb. 27, 1917.y

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| l wn-Nsssr-:s H INVENTon W. C. HOUSHOLDER.

TEMPERATURE REGULATING AND lNDlATING DEVICE. APPucATxoN FILEDMAR. 14.19161.

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WITNESSES y, INVENTQR wwbw @Sge-MQW awk.

WILLIAM C. HOUSI-IOLDER, OF YOUNGWOOD, PENNSYLVANIA.y

TEMPERATURE REGULATING AND INDICATING DEVICE.

have invented anew and useful Improvement in Temperature Regulating andIndicating Devices; and I do hereby declare the following to be a full,clear, and exact dei scription thereof.

My invention pertains to temperature regulating and indicating devices.It. is an object of my, invention to produce a. simple and efficientdevice for automatically shutting off the supply of fuel when thesubstance to be heated has' reached a predetermined degree oftemperature. It'is another object' of the inventionto provide such adevice with means for indicating at all times the temperature of the'substance being heated. It is another object of the invention to providesucha devicey with a simple and convenient means' for ad`ustment, topermit of the fuel being cut 0 at various predetermined temperatures ofthe substance be-` ing heated. Itl is still anotherobject of theinvention to provide a device of the character set forth above, in whichthe operating parts will be readilyy accessible for inspection,adjustment or repair. And other and further objects of the inventionwill appear from the following specification taken in connection withthe appended claims.

By way of example, I have shown in the accompanying dra-wings, anddescribed in the following specification, one form of temperatureregulating and indicating device constructed in accordance with myinvention. It is to be understood, however, that the invention may beembodied in other forms, and that changes may be made in the embodimentdescribed and shown, without exceeding the scope of the invention asdefined in the appended claims( In the drawings:

Figurel is a side elevation of a temperature regulator and indicatorconstructed in accordance with my invention, and of a type i intendedfor controlling the supply of gas to a gas burner;

Fig. 2 is a sectional elevation,the section being taken on the lines 2 2of Figs. 1 and 4, looking in the direction of the arrows;

Fig. 3 is a top plan of the device; Fig. 4 is a top plan of the devicewiththe cover removed;

Application filed March 14, 1916.

Specification of Letters Patent. Patented Feb. 27, 1917.

Serial No. 84,250.

Fig. 5 isan inverted plan of the cover; and

lines 6-6 of Fig. 3, looking in the. direction of the arrows.

Like reference characters refer to like parts throughout the followingspecification, and the several figures of the accompanying drawings.

Referring now to the drawings, 10 indicates a dished base havingadepression 11 formed therein, which depression communicates, by meansof a passage 12, with a socket 13 for receiving the end of the outletgas pipe. Centrally disposed in the depression is a guide 14 forslidably receiving the stem 15 of a valve 16, which valve is verticallymovable, so as to permit the entrance of gas to the passage 12 whenraised, but to seat, when lowered upon the rim of the. depression 1l,and thereby prevent the entrance of gas to the passage 12.

Extending downwardly from -the base 10,

is a socket 17 which is internally threaded to receive the end of -aclosed pipe 18, thel expansion and contraction of which controls thevalve 16. The pipe 18 is usually of iron but, where a greater expandingand contracting movement is desired, it may be of copper or the like.Restingy upon the bottom of the pipe 18 is a rod or tube 19 formed ofglass or the like, upon'the upper end of which rests a stub2(l-threaded, so as to be cal'lable of adjustment into a lever 21, whichis pivoted to the base 10, at 22. The lever .21 1s thus supported bynthestub 20, resting on the top ofthe rod 19. ivoted to the end of the lever21remote from the pivot 22 is an adjusting lever 23, one end of-whichengages in a stirrup 24 extending upwardly.

from the valve 16. The other end of the lever 23 is engaged by anadjusting screw 25, carried by the cover now to be described.

` Upon the base l0 is mounted a. dished cover 26. the cover and basebeing connect- 4ed together by means of screws engaging with lugs 28 onthe cover and corresponding lugs 29 upon the base. A gasket 27 isinserted between the base and the cover in order to form a gas tightconnection. In this way the clover and base form together a'gas tightchamber, into which gasis introduced bv means of a pipe-threaded into asocket 30 formed in the base-1,0.

Rockably mounted in the cover 26` and extending from one side to theother there- Fig. 6 isa detailed section taken on the of is a spindle3l, which is provided with a forked lever 32 which embraces a smallprojection formed at the top-of the stirrup 24 of the valve 16. A spiralspring 33 tends to press the lever 32 firmly upon the stirrup 24. Thespindle 31 has also extending therefrom an arm 34 (Figs. 2 and 5)- whichengages the end of a segment lever 35 which is pivoted in a frame 36carried by the top of the cover 26. So as to permit movement of thesegment lever 35-in anopposite direction, the latter has attachedthereto a leaf spring 37,

-which is placed opposite the end of the segment lever 35, at thepartwhere the latter is engaged by the arm 34. The segment lever 35meshes with a pinion 38 carried by i a spindle 39, which extends'upwardly through the cover 26 and is provided with a` hand 40. `Beneaththe hand 40,v and surrounding the spindle 39, is a dial 41, which isvcapable of angular adjustment, and-can be secured in its adjustedposition by'means of a set screw 42. An externally screw threaded flange43 surrounds the ,dial 41, and carries a glass bezel 44, whichlatter issecuredr in place by means of a threaded ring 45, a gasket 46 beinginterposed between the bezel and the top of the flange 43 so as toprovide a gas tight connection. y

The operation of the device is as follows: It is understoodthatthethermostatic element, -in this instance the pipe 18, is inserted inthe space or substance toy be heated, and

that a gas inlet pipe is connected to the socket 30 and a pipe leadingto the-burners is connected to the socket 13. Assuming thattheregulating screw125hasY been adjusted for a/maximum'temperature of 4009,and thatsuch heat has been reached, the

parts-'will be in the position shown in Fig." v2, the valve 16 havingjust reached its closed position, and the gas, therefore, being cut.l

off. Owingto thecutting off of the gas, the temperature will decrease,permitting the pipe 18' to contract, thereby raising the lever '21 andopening the valve 16 again, whereupon gas will be admitted to the burn-'ers and the temperature raised again. The movements of the valve 16 arecommunicated to the hand 40which latter at all times indicates thevactualv temperature. When it is desired to change the adjustment of thedevice to causeit tooperate at a. dif- 4ferent predeterminedtemperature, this is eifected by manipulating the adjusting screw 25 andeffecting a corresponding adjust- Lment of the -dial 41. Y l

Ity will beseen that the dev-ice is of an,

extremely simple and ruggedy construction, and that there are .no partswhich are at all liable to get out of order.l It will maintain thetemperature of the substance being heated uniformly at the desiredpredetermined degree; and this degree may be varied at will by changingthe adjustment of the screw 25. During the operation of the device, aswell as when the substance under treatment is being heated up torequired degree, or is being allowed to cool off, the

temperature. of such substance is always indicated by the hand40.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent-is:

l. A temperature regulating and indicating device comprising a support,a fuel valve associated with. said support, a lever pivotally associatedwith said support, a second lever pivotally connected with said firstvnamed lever andcoperating with said valve,

a heat-responsive element coperating with said first named lever, aspingpressed rock- .a-ble spindle, an arm on saidspindle dis-V` posedfor engagement with said valve, and an indicating device operated bysaid spindle.

2. A temperature regulating and indicating device comprising a support,a fuel valve associated with said support, a heat-respon sive member,means, controlled by said heat-responsive member, for operating saidvalveat predetermined temperatures', a

fing with said first-named lever, a spring pressedrockable spindle, anarm on said spindle disposed for engagement with said valve a pivotedtoothed segment, connection me'ans between-said segment and saidspindle, and a temperature indicating hand actuated by said segment. Y

In testimony whereof, I the said WIL- LIAM C. HoUsHoLDER have hereunto.set myV hand. v WILLIAM C. HOUSHOLDER,

Witnesses:

CALVIN F. MORRIS, CHAS. `F. MILLER.

